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Finding the Fourth Proportional to 15,048.63, 20,766.69 and 8,675.06

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Solution

The fourth proportional to 15,048.63, 20,766.69 and 8,675.06 is: 11,971.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,048.63 : 20,766.69 = 8,675.06 : x
  2. Step 2: Convert to fraction form
    15,048.63/20,766.69 = 8,675.06/x
  3. Step 3: Cross multiply
    15,048.63x = 20,766.69 × 8,675.06
  4. Step 4: Simplify right side
    15,048.63x = 180,152,177.92
  5. Step 5: Solve for x
    x = 180,152,177.92/15,048.63
  6. Step 6: Final answer
    x = 11,971.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.